This version is the fastest if not responsive ever... but still few bug esspeciallyafter upgrade, it may stuck on touch screen, but will fix with potrait mode. Afterrecalibrate it will be fine and responsive. It even load pdf file faster, I only triedwith the preloaded software (Documents To Go). But I think will worked better if it rooted and can use swap partition.The most annoying thing is the bug or error with the "a.core" after installmuch apps. It cause it not to return to "home" or won't go to the desktopeven reset won't fix it. Only can be fix by reflash, so I think won't worth it forme to used for now. Revert back to ecotox firmware...*sorry for my bad english...